2280950

Information

• Patent Grant
• 2280950

• References
• Source

• Patent Number

  2,280,950

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1942
  82 years ago

• CPC

  • H04B3/11 - using pilot wire
  • H02H1/0084 - by means of pilot wires or a telephone network; watching of these wires

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 333 - Wave transmission lines and networks
  • 361 - Electricity: electrical systems and devices